EP 3778684 A4 20211201 - BLOCK COPOLYMER, METHOD FOR PRODUCING SAME, RUBBER COMPOSITION USING SAID BLOCK COPOLYMER, AND TIRE

Title (en)

BLOCK COPOLYMER, METHOD FOR PRODUCING SAME, RUBBER COMPOSITION USING SAID BLOCK COPOLYMER, AND TIRE

Title (de)

BLOCKCOPOLYMER, VERFAHREN ZUR HERSTELLUNG DAVON, KAUTSCHUKZUSAMMENSETZUNG UNTER VERWENDUNG DES BESAGTEN BLOCKCOPOLYMERS UND REIFEN

Title (fr)

COPOLYMÈRE SÉQUENCÉ, SON PROCÉDÉ DE PRODUCTION, COMPOSITION DE CAOUTCHOUC UTILISANT LEDIT COPOLYMÈRE SÉQUENCÉ, ET PNEU

Publication

EP 3778684 A4 20211201 (EN)

Application

EP 19776012 A 20190328

Priority

JP 2018066034 A 20180329
JP 2019013598 W 20190328

Abstract (en)

[origin: EP3778684A1] The present invention relates to a block copolymer that contains a polymer block A containing a farnesene-derived monomer unit (a1) and a random copolymer block B containing a C12 or lower conjugated diene-derived monomer unit (b1) and an aromatic vinyl compound-derived monomer unit (b2), the block copolymer having a ratio by mass of the polymer block A to the random copolymer block B (A/B) of 30/70 to 0.5/99.5, a content of the aromatic vinyl compound-derived monomer unit (b2) in the random copolymer block B of 1 to 50% by mass, and a weight average molecular weight (Mw) of 100,000 to 5,000,000.

IPC 8 full level

C08F 297/04 (2006.01); B60C 1/00 (2006.01); C08L 53/02 (2006.01)

CPC (source: EP KR US)

B60C 1/00 (2013.01 - EP KR US); B60C 1/0016 (2013.01 - EP); C08F 212/08 (2013.01 - US); C08F 236/04 (2013.01 - KR); C08F 236/06 (2013.01 - US); C08F 236/22 (2013.01 - KR US); C08F 297/044 (2013.01 - EP); C08F 297/048 (2013.01 - KR); C08K 3/04 (2013.01 - US); C08K 3/36 (2013.01 - US); C08K 5/5419 (2013.01 - US); C08L 53/02 (2013.01 - EP KR US); C08F 2438/00 (2013.01 - US); Y02T 10/86 (2013.01 - EP)

C-Set (source: EP)

C08L 53/02 + C08L 53/02 + C08L 9/00 + C08K 3/04 + C08K 3/36
C08L 53/02 + C08L 9/00 + C08K 3/04 + C08K 3/36

Citation (search report)

[I] JP 2017214489 A 20171207 - KURARAY CO, et al
[A] JP 2017014373 A 20170119 - KURARAY CO, et al
[A] EP 3255073 A1 20171213 - KURARAY CO [JP], et al
See also references of WO 2019189572A1

Designated contracting state (EPC)

AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

DOCDB simple family (publication)

EP 3778684 A1 20210217; EP 3778684 A4 20211201; EP 3778684 B1 20240522; CA 3095312 A1 20191003; CN 111886269 A 20201103; CN 111886269 B 20231117; JP 7291123 B2 20230614; JP WO2019189572 A1 20210422; KR 102651669 B1 20240326; KR 20200138736 A 20201210; TW 201942169 A 20191101; US 11976190 B2 20240507; US 2021017378 A1 20210121; WO 2019189572 A1 20191003

DOCDB simple family (application)

EP 19776012 A 20190328; CA 3095312 A 20190328; CN 201980023176 A 20190328; JP 2019013598 W 20190328; JP 2020509318 A 20190328; KR 20207027610 A 20190328; TW 108111161 A 20190329; US 201917040829 A 20190328